281期：16码≤≤04,05,09,13,15,18,23,25,26,27,30,34,35,36,41,47≥≥开：47对
282期：16码≤≤02,04,05,06,15,18,20,21,22,25,30,32,36,37,40,41≥≥开：41对
283期：16码≤≤03,04,15,18,20,23,25,26,30,32,35,38,43,44,48,49≥≥开：45错
284期：16码≤≤01,02,05,07,09,10,12,17,20,28,31,32,41,43,44,48≥≥开：41对
285期：16码≤≤07,09,14,19,20,21,23,24,32,36,37,39,41,42,45,49≥≥开：//